add support for wifi connections from nodes

mesh.options

@@ -19,6 +19,9 @@
 # note: this payload length is ONLY the bytes that are sent inside of the radiohead packet
 *Data.payload max_size:240
 
+*UserPreferences.wifi_ssid max_size:33
+*UserPreferences.wifi_password max_size:64
+
 # 256 bit or 128 bit psk key
 *ChannelSettings.psk max_size:32
 *ChannelSettings.name max_size:12

mesh.proto

@@ -414,13 +414,20 @@ message RadioConfig {
     uint32 ls_secs = 10;
     uint32 min_wake_secs = 11;
 
+    /** If set, this node will try to join the specified wifi network and acquire an address via DHCP */
+    string wifi_ssid = 12; 
+    /** If set, will be use to authenticate to the named wifi */
+    string wifi_password = 13;
+    /** If set, the node will operate as an AP (and DHCP server), otherwise it will be a station */
+    bool wifi_ap_mode = 14;
+
     // If true, radio should not try to be smart about what packets to queue to
     // the phone
-    bool keep_all_packets = 100;
+    //bool keep_all_packets = 100;
 
     // If true, we will try to capture all the packets sent on the mesh, not
     // just the ones destined to our node.
-    bool promiscuous_mode = 101;
+    //bool promiscuous_mode = 101;
 
     /**
     For testing it is useful sometimes to force a node to never listen to